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/*
* Copyright (c) 2016 Cisco and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fd.honeycomb.translate.util.read;
import static com.google.common.base.Preconditions.checkArgument;
import com.google.common.base.Optional;
import com.google.common.collect.Lists;
import io.fd.honeycomb.translate.util.ReflectionUtils;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collections;
import javax.annotation.Nonnull;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.Augmentation;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
/**
* Might be slow !
*/
class ReflexiveReaderCustomizer<C extends DataObject, B extends Builder<C>> extends NoopReaderCustomizer<C, B> {
private final Class<C> typeClass;
private final Class<B> builderClass;
public ReflexiveReaderCustomizer(final Class<C> typeClass, final Class<B> builderClass) {
this.typeClass = typeClass;
this.builderClass = builderClass;
}
protected Class<C> getTypeClass() {
return typeClass;
}
protected Class<B> getBuilderClass() {
return builderClass;
}
@Nonnull
@Override
public B getBuilder(@Nonnull InstanceIdentifier<C> id) {
try {
return builderClass.newInstance();
} catch (InstantiationException | IllegalAccessException e) {
throw new IllegalStateException("Unable to instantiate " + builderClass, e);
}
}
@Override
public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final C readValue) {
if (Augmentation.class.isAssignableFrom(typeClass)) {
mergeAugmentation(parentBuilder, (Class<? extends Augmentation<?>>) typeClass, readValue);
} else {
mergeRegular(parentBuilder, readValue);
}
}
private static void mergeRegular(@Nonnull final Builder<? extends DataObject> parentBuilder,
@Nonnull final DataObject readValue) {
final Optional<Method> method =
ReflectionUtils.findMethodReflex(parentBuilder.getClass(), "set",
Collections.singletonList(readValue.getClass()), parentBuilder.getClass());
checkArgument(method.isPresent(), "Unable to set %s to %s", readValue, parentBuilder);
try {
method.get().invoke(parentBuilder, readValue);
} catch (IllegalAccessException | InvocationTargetException e) {
throw new IllegalArgumentException("Unable to set " + readValue + " to " + parentBuilder, e);
}
}
private static void mergeAugmentation(@Nonnull final Builder<? extends DataObject> parentBuilder,
@Nonnull final Class<? extends Augmentation<?>> typeClass,
@Nonnull final DataObject readValue) {
final Optional<Method> method =
ReflectionUtils.findMethodReflex(parentBuilder.getClass(), "addAugmentation",
Lists.newArrayList(Class.class, Augmentation.class), parentBuilder.getClass());
checkArgument(method.isPresent(), "Not possible to add augmentations to builder: %s", parentBuilder);
try {
method.get().invoke(parentBuilder, typeClass, readValue);
} catch (IllegalAccessException | InvocationTargetException e) {
throw new IllegalArgumentException("Unable to set " + readValue + " to " + parentBuilder, e);
}
}
}
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